Haemodorum planifolium Blood Root, Blood-root Lily
Hakea eriantha Tree Hakea
Hakea florulenta -
Hakea laevipes subsp. graniticola Finger Hakea, Three-nerved Willow Hakea
Hakea macrorrhyncha Needlebush (V)
Hakea microcarpa Small-fruited Hakea
Haloragis heterophylla Rough Raspwort, Variable Raspwort
Hardenbergia violacea False Sarsaparilla Vine, Happy Wanderer, Native Lilac, Native Sarsaparilla Vine, Purple Coral Pea, Waraburra (Kattang)
Harmogia densifolia -
Heliotropium amplexicaule Blue Heliotrope (*)
Hemarthria uncinata var. uncinata Matgrass
Hemigenia cuneifolia -
Hibbertia acicularis Prickly Guinea Flower, Rough Guinea Flower
Hibbertia aspera Rough Guinea Flower
Hibbertia cistoidea -
Hibbertia elata Tall Guinea Flower (NT)
Hibbertia linearis var. obtusifolia Grey Guinea Flower, Hoary Guinea Flower
Hibbertia riparia Erect Guinea Flower, Upright Guinea Flower
Hibbertia scandens Climbing Guinea Flower, Snake Vine, Twining Guinea Flower
Hibbertia sp. (Carnarvon Range C.T.White 11332) -
Hibbertia sp. (Girraween NP D.Halford+ Q1611) -
Hibbertia stricta var. stricta Brown Guinea Flower
Hibbertia tenuifolia Narrow-leaved Guinea Flower
Holcus lanatus Meadow Soft-grass, Yorkshire Fog (*)
Homalanthus populifolius Native Bleeding Heart, Native Poplar, Queensland Poplar
Homoranthus inopinatus -
Homoranthus papillatus Mouse Bush (V)
Hordeum glaucum Barley Grass, Northern Barley Grass (*)
Hovea graniticola Granite Hovea
Hovea heterophylla Common Hovea, Narrow-leaved Hovea, Narrow-leaved Pea-bush, Trailing Hovea
Hovea linearis Common Hovea, Creeping Hovea, Linear-leaved Hovea
Hovea pedunculata -
Hovea similis -
Hybanthus monopetalus Blue Spade Flower, Lady's Slipper, Slender Violet-bush
Hydrocotyle laxiflora Shitweed, Stinking Pennywort
Hydrocotyle peduncularis Small Pennywort
Hydrocotyle tripartita Slender Pennywort
Hyparrhenia hirta Common Thatching Grass, Coolatai Grass (*)
Hypericum gramineum Small St. John's Wort
Hypericum involutum Small St John's Wort
Hypericum perforatum subsp. veronense Common St. John's Wort, Goat Weed, Klamath Weed (*)
Hypochaeris glabra Smooth Catsear (*)
Hypochaeris radicata Catsear, Flatweed (*)
Hypoxis hygrometrica var. villosisepala Golden Star, Golden Weather-grass